Parameter sensitivity analysis of pedestrian head dynamic response and injuries based on coupling simulations

Area of Science:

• Biomechanics
• Automotive Safety
• Injury Prevention

Background:

• Limited research exists on pedestrian head dynamics and injuries during windshield impacts.
• Understanding these mechanisms is crucial for improving vehicle safety and reducing pedestrian fatalities.

Purpose of the Study:

• To investigate key factors influencing pedestrian head dynamic response and injury.
• To identify critical parameters for head injury mechanism studies and collision reconstruction.

Main Methods:

• Utilized finite element-multi-body coupling simulations with two vehicle and two pedestrian models.
• Employed orthogonal experimental design and analysis of variance for parameter analysis.

Main Results:

• Collision speed and pedestrian orientation significantly correlated with head dynamic response and Head Injury Criterion (HIC15).
• Vehicle type also significantly influenced head response and HIC15.
• Pedestrian model size did not show a significant relationship with head response or HIC15.

Conclusions:

• Collision speed, pedestrian orientation, and vehicle type are paramount in windshield impact scenarios.
• These factors should be prioritized in research on pedestrian head injury mechanisms and collision reconstruction.